657A MAGNETIC BASE W/657

Features: Provides universal adjustment in both horizontal and vertical planes | For use with all Starrett Test, Back-Plunger, AGD, Dial and Miniature-Dial Indicators | Accommodates similar indicators of other manufacturers | Powerful, permanent magnetic base holds firmly to steel or iron surfaces - horizontally, vertically, upside-down | Push-button turns magnetic force on or off for quick, one-hand set-up and take-down | V-step adapts base to horizontal or vertical arbors and chucks | Black wrinkle finish on non-working surfaces